GB515903A - Improvement in electric oscillation generators for producing oscillations of saw tooth wave-form - Google Patents

Improvement in electric oscillation generators for producing oscillations of saw tooth wave-form

Info

Publication number
GB515903A
GB515903A GB17822/38A GB1782238A GB515903A GB 515903 A GB515903 A GB 515903A GB 17822/38 A GB17822/38 A GB 17822/38A GB 1782238 A GB1782238 A GB 1782238A GB 515903 A GB515903 A GB 515903A
Authority
GB
United Kingdom
Prior art keywords
condenser
battery
rectifier
coil
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB17822/38A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB515903A publication Critical patent/GB515903A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/86—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements gas-filled tubes or spark-gaps
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/12—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor
    • H03K4/16—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth voltage is produced across a capacitor using a single tube with positive feedback through transformer, e.g. blocking oscillator

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • X-Ray Techniques (AREA)
  • Rectifiers (AREA)

Abstract

515,903. Valve generating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. June 15, 1938, No. 17822. Convention date, June 15, 1937. [Class 40 (v)] In a back coupled oscillator in which the rate of flow through a grid controlled electron discharge valve is periodically changed by negatively charging a condenser in the grid circuit through a rectifier and an inductance reactively coupled with the valve anode, a further rectifier is connected in parallel with the condenser to ensure that the condenser is always charged to the same potential. The condenser 11 is charged slowly from battery 13 through resistance 14 and anode current flows at a slowly increasing rate. When a synchronizing pulse is received on an additional grid of valve 10 or when the voltage across the condenser exceeds that across coil 12 the condenser 11 and the whole of the magnetic energy of coil 16 discharges rapidly through rectifier 15 so that condenser 11 is charged in the opposite sense, and the condenser charge is then again built up slowly from battery 13 for the cycle to repeat. Rectifier 18 and battery 19 ensure that the negative voltage on condenser 11 is always the same and equals the steady voltage of battery 19. A saw tooth potential is produced across condenser 11 and a saw tooth current flows in coil 16 which may be a deflecting coil of a cathode-ray tube. Specification 461,325 is referred to.
GB17822/38A 1937-06-15 1938-06-15 Improvement in electric oscillation generators for producing oscillations of saw tooth wave-form Expired GB515903A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET0048742 1937-06-15

Publications (1)

Publication Number Publication Date
GB515903A true GB515903A (en) 1939-12-18

Family

ID=7562932

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17822/38A Expired GB515903A (en) 1937-06-15 1938-06-15 Improvement in electric oscillation generators for producing oscillations of saw tooth wave-form

Country Status (3)

Country Link
US (1) US2217401A (en)
FR (1) FR839288A (en)
GB (1) GB515903A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE477944A (en) * 1946-09-16
BE483500A (en) * 1946-10-24
US2689913A (en) * 1949-01-18 1954-09-21 Du Mont Allen B Lab Inc Means for stabilizing oscillator circuit
US2593330A (en) * 1949-06-02 1952-04-15 Bell Telephone Labor Inc Variable frequency relaxation oscillator
US3133229A (en) * 1950-06-12 1964-05-12 Fleming Lawrence Actuation level control circuit for an electro-responsive device
US3067393A (en) * 1958-04-01 1962-12-04 Hughes Aircraft Co Pulse generator

Also Published As

Publication number Publication date
FR839288A (en) 1939-03-30
US2217401A (en) 1940-10-08

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